Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    07-09-2024 22:18

General

  • Target

    d2f2c08ebeb5e226b23fbae86bc51169_JaffaCakes118.dll

  • Size

    5.0MB

  • MD5

    d2f2c08ebeb5e226b23fbae86bc51169

  • SHA1

    ac4bbe7363aa4f1cbaa8c66818726ab13373fe09

  • SHA256

    88674e9e3762f6c669a749134efc4daff5ddede1ca50d1167a216b635a2bce8d

  • SHA512

    6ac6c5d00afea526c778e973f9342959ac8c4490a87dfd4347bb47e6d4539d114b5b5ce59e27db72632744b0d207199f64f013d86e716e31208c8399a8a78f06

  • SSDEEP

    49152:SnAQqMSPbcBVu/1INRx+TSqTdX1HkQo6SAA:+DqPoBI1aRxcSUDk36SA

Malware Config

Signatures

  • Wannacry

    WannaCry is a ransomware cryptoworm.

  • Contacts a large (3289) amount of remote hosts 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • Executes dropped EXE 3 IoCs
  • Creates a large amount of network flows 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • Drops file in System32 directory 1 IoCs
  • Drops file in Windows directory 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies data under HKEY_USERS 24 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\d2f2c08ebeb5e226b23fbae86bc51169_JaffaCakes118.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1700
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\d2f2c08ebeb5e226b23fbae86bc51169_JaffaCakes118.dll,#1
      2⤵
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1900
      • C:\WINDOWS\mssecsvc.exe
        C:\WINDOWS\mssecsvc.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:2172
        • C:\WINDOWS\tasksche.exe
          C:\WINDOWS\tasksche.exe /i
          4⤵
          • Executes dropped EXE
          PID:2696
  • C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe -m security
    1⤵
    • Executes dropped EXE
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Modifies data under HKEY_USERS
    PID:2056

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\mssecsvc.exe

    Filesize

    3.6MB

    MD5

    3fea3a6fa33027e883f56153ba2efb7c

    SHA1

    cb418468f681574ffda7f23869ce2108215961d5

    SHA256

    6fd4e99f6083595256d5724c8da529945763454b0666d229ca8987702e405ec9

    SHA512

    141a5420ea928e7088343254aaf0955e1de4572b11de8bd1b8d3745685da8b9286f28ba274faf804f5cb071c1dd16ae0ead18f0f5ae4ce2ad6e23a4b0d87b599

  • C:\Windows\tasksche.exe

    Filesize

    3.4MB

    MD5

    c703676c99b49e2f0b4b3543af5bb91b

    SHA1

    4fb551d62fc28bf553d7a9d1b3a74af40a43717b

    SHA256

    5c5d64979714cfb92ab45357e791a8729c151b248fbe103e4c4a4b89a81e64e9

    SHA512

    0bef8cab7ab951a5e0a6fb46aa051dbdb85e9ba05b577eff42bd0dd8d97070d24f909983368e6fd8754c49a3e8a5599ccbf213617b86fdeb9f4f1a2dd7d8dffd